User`s guide

Table of Contents
iv MS-4900, Rev. A
Section 4. Interpreting Screen Displays
Identifying Problem Indications .................................................................................. 4-1
Check Signal Quality............................................................................................................. 4-2
Superscreen Fields........................................................................................................4-2
Demodulator Screen Fields ........................................................................................... 4-3
TDD Screen Fields ........................................................................................................4-4
Active Sessions Screen Fields.......................................................................................4-5
Check Output Ports............................................................................................................... 4-6
Show Status/Logical Receivers......................................................................................4-6
View Setup of Logical Receivers....................................................................................4-7
TDD Channels...............................................................................................................4-8
Diagnostic Screens........................................................................................................4-9
Verifying Ethernet Screens....................................................................................... 4-10
View Setup.......................................................................................................................... 4-10
Local IP Address..........................................................................................................4-10
Subnet Mask................................................................................................................4-10
Gateway IPO Address .................................................................................................4-10
SNMP Trap IP Address................................................................................................4-11
Host IP Address...........................................................................................................4-11
Specify Setup: IP Addresses .............................................................................................. 4-11
Changing an Address...................................................................................................4-11
Examining System Messages ................................................................................... 4-12
Error and Warning Messages.............................................................................................. 4-12
Section 5. Functional Overview
Network Overview........................................................................................................ 5-1
Network Components............................................................................................................ 5-1
The NCC: Input and Output................................................................................................... 5-2
The Receiver: Input and Output ............................................................................................ 5-4
Modes of Moving Data................................................................................................. 5-4
Transparent Sync and Async Data ........................................................................................ 5-4
Stat Mux Data....................................................................................................................... 5-5
Logical Receivers ..........................................................................................................5-5
TVCs and PVCs.................................................................................................................... 5-6
PAD and Node Modes........................................................................................................... 5-6
PAD Mode and PVC Sessions .......................................................................................5-7
PAD Mode and TVC Sessions .......................................................................................5-7
Node Mode....................................................................................................................5-7
IDR V1000: Functional Overview ................................................................................ 5-8
Signal Input: LNB and Tuner ................................................................................................. 5-9
Demodulating and Error-Correcting....................................................................................... 5-9
Time-Division Demultiplexer (TDD)..................................................................................... 5-10
Processor............................................................................................................................ 5-10
Statistical Demultiplexer (Stat Demux)................................................................................ 5-10
Buffering and Flow Control.................................................................................................. 5-11
Serial Output Ports.............................................................................................................. 5-11